To support the increasing data traffic demand in wireless communications networks, a multi-tier architecture that consists of multiple small cells is adopted traditional (macro) cellular networks. Nevertheless, due to expansion various devices and services, there still need increase network capacity new generation networks such as 5G. Hence, integration Device-to-Device (D2D) communication promising technology with heterogeneous has been proposed. This not only increases but also improves...

To enhance spectral efficiency and network throughput in Device-to-Device (D2D)-enabled cellular networks, various resource sharing methods can be utilized. However, when users such dense complicated networks share the same resources, co-channel interference arises. Therefore, more efficient comprehensive frameworks should used to accurately model then decrease increase efficiency. This work proposes a novel practical allocation framework that considers realistic assumptions based on...

Asynchronous data fusion is inevitable in track-to-track for tracking high-speed targets. For low-speed targets, e.g., the movement of clouds, synchronization insignificant and, depending on application, may be disregarded. Real-time asynchronous a demanding task sensor networks when sensors are not synchronous sampling-rate or sampling-phase. In method proposed this paper, an estimator center estimates actual time sample with respect to time-reference upon receiving from sensor. Then,...

Online media play an important role in information societies by providing a convenient infrastructure for different processes. Information diffusion that is fundamental process taking place on social and networks has been investigated many studies. Research these faces two main challenges: (1) In most cases, takes underlying network, which latent its structure unknown. (2) This network not fixed changes over time. this article, we investigate the extraction (DNE) problem when dynamic latent....

Machine-to-Machine (M2M) communication is an important type of in the Internet-of-Things (IoT). How to send data these high-density communications using relay selection can help improve performance this various applications. In addition, possibility simultaneous use different Radio Frequency (RF) interfaces helps spectrum more efficiently. work, we try further machine RF equipment and average rate networks some applications such as IoT, which have their own bandwidth requirements. Therefore,...

The human factor is one of the most critical parameters in car accidents and even traffic occurrences. Driving style affected by factors comprises driving events (maneuvers) driver behaviors. event detection fundamental step identifying facilitates predicting potentially unsafe behaviors, preventing accidents, imposing restrictions on high-risk drivers. This paper proposes a deep hybrid model to detect safe behaviors using real-time smartphone sensor signals. ensemble Multi-layer Perceptron,...

Depth estimation is critical for autonomous vehicles (AVs) to perceive their surrounding environment. However, the majority of current approaches rely on costly sensors, making wide-scale deployment or integration with present-day transportation difficult. This issue highlights camera as most affordable and readily available sensor AVs. To overcome this limitation, paper uses monocular depth a low-cost, data-driven strategy approximating from an RGB image. achieve low complexity, we...

In the past few years, study of complex networks has attracted attention researchers. Many real networks, ranging from technological such as Internet to biological have been considered special types networks. Through application network science, important structural properties analyzed and mechanisms that form characteristics introduced. this paper, we address a called Vehicular Ad hoc Networks (VANETs). Recent studies reveal communication graph VANETs some interesting including: Gaussian...

Machine-to-Machine (M2M) communications have been introduced to improve the communication capacity in dense wireless networks. One of most important concerns for network designers is maintaining high performance when quality connections between sources and their destinations poor. Thus careful selection relays data a very issue. The possibility simultaneous use different Radio Frequency (RF) interfaces transmitting data, which devices are equipped with them, can increase transmission over...

Data aggregation is an efficient method to conserve energy by reducing packet transmissions in WSNs. However, providing end-to-end data reliability a major challenge when the network uses aggregation. In this case, loss can miss complete subtree of values, thus greatly affecting final results. transmission multiple paths tolerate problem, but it may incur some computation errors for duplicate-sensitive aggregates. paper, we propose Flexible Overlay Multi-path Aggregation protocol (FOMA)...

In many wireless communication protocols, small and random delay, called jitter, is imposed before packet transmission so as to reduce collisions. Jitter recommended for routing protocols such AODV LOADng. can be exploited change the order of routes about which destination informed and, a result, make better routes, regarding their metric, more likely choose by destination. However, best our knowledge, there only one mechanism, adaptive jitter proposed metric-based protocols. this paper, we...

Feed-forward is one of the main methods for linearising microwave power amplifiers. The level inter-modulation rejection (IMR) values can be predicted by appropriate modelling feed-forward amplifier. Here, we have presented closed form expressions, which used predicting IMR first and second adjacent channels. Fifth- third-order nonlinear models been error amplifiers, respectively. verified using ADS simulator a MATLAB program.

Precise modeling of the optical channels with different conditions atmospheric turbulence is an important prerequisite for analyzing performance Free Space Optical (FSO) communication systems. Statistical models which have been proposed to describe channels, some limitations precisely model channel. In this paper, The ℳ distribution a relatively new and comprehensive model, introduced by University Malaga, has used evaluate FSO/RF hybrid systems under effect two modes operation, classic...

Mobility is one of the most challenging issues in mobile ad-hoc networks which has a significant impact on performance network protocols. To cope with this issue, protocol designers should be able to analyze movement nodes particular wireless network. In paper, new framework called mobility analyzer been introduced for analysis and recognition traces. At first, acquires some traces collected by GPS or generated simulators; then it calculates metrics represent behavior nodes; finally attempts...

Existence of cache space in each node the network is one fundamental characteristics Named Data Networks (NDN) which makes it a promising architecture for data dissemination over Internet. Most existing caching strategies consider on-path caching, aims to replicate popular objects redundantly inside network. Furthermore, while most works focus on bandwidth utilization and latency improvement, we introduce novel criteria elevate efficiency order make use within In this paper, propose...

Performance evaluation of mobile networks needs accurate simulation set up including realistic characteristics. The most important issue in networks' is the mobility nodes. Since nodes usually are carried by humans, thus, should be modelized as human movement. To best our knowledge, none existing models have ability to modelize all movement In this paper, a new model has been proposed based on data collected for more than 6000 hours. captures properties introducing hotspot zones, using graph...

In this paper, we have proposed some changes to MAC protocol for improving the performance of transport layer in cognitive radio ad-hoc networks.We studied effects different and routing protocols on TCP technology enabled environments.We reviewed two situations.In first situation, all users are secondary while second situation both primary exist.We used CRCN simulator which is based NS2.We added qualifications by sequential method.This method appoints prioritized access specified channels...